Sash-lock.



No. 659,457. Patented Oct. 9, I900. L. H. SPARKS.

SASH' LUCK.

(Application filed July 26, 1900.) No Mo J "2 Shaet$-$he6t l.

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No. 659,457. Patented Dot. 9, I900.

L. H. S S.

SASH- (Applicafion flied July 28, 1900.) I

(No Model.) 2 Sheets-Sheet 2 NITED STATES PATENT ()FFICE.

LORENZO H. SPARKS, OF PITTSBURG, PENNSYLVANIA.

SASH-LOCK.

SPECIFICATION forming part of Letters Patent No. 659,457, dated October9, 1900.

Application filed July 26,1900. Serial Na 24,879. kNo model.)

To rtZZ whmn it may concern;

Be it known that I, LORENZO H. SPARKs,a citizen of the United States ofAmerica, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inWindow-Sash Locks, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to certain new and usefulimprovements insash-fasteners, and has for its object to constructadevice which may beconveniently attached to a windowframe and operated so as to hold boththe upper and lower sash at any desired point and lock the same inposition.

Briefly described, the invention consists of a clamping-bar which ispivotally held on a plate attached to the inner face of theWindow-frame, said bar being pivotally connected near its upper end to arod which extends outwardly through the frame at the front thereof andis provided with a right-hand thread to receive the thread formed on theoperating-nut, the latter being provided with exterior threads and outleft hand or in opposition to the interior threads to operate in thethreaded socket which is countersunk in the window-frame.

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this specification, and whereinlike numerals of reference indicate corresponding parts throughout theseveral views, in which- Figure 1 is a front view of a portion of awindow-frame and the sash, showing my improved device in position. Fig.2 is a side view of the frame with the sash in section, showing theholder in position. Fig. 3 is a horizontal sectional view taken on theline 3 3 of.Fig. 2. Fig. 4 is a detail perspective view of the holderwith the operating-nut removed. Fig. 5 is a side view of theoperatingrod which is arranged in the window-frame.

Referring to the drawings by referencenumerals, 1 indicates the stile orside of the window-frame, 2 the lower sash, and 3 the upper sash, bothbeing of the ordinary form of construction. Adjacent to the meetingrailsof the sash I cut away a part of the weather-strip tor the frame, and inthis cutaway portion 1 place in the frame, preferably recessed therein,a plate 5, which has pivotally secured to its center a clamping-bar 6,the ends 7 of which are turned outwardly at right angles to the bar andare adapted to have their inner faces engage with thesashrails 2 3, theone end engaging with the lower sash and the other end with the uppersash. Near the upper end of the clamping-bar 6 I pivotally attachthereto the inner end of the operating-rod 8, which is arranged withinthe recess 9 on the inner face of the frame and extends outwardlythrough the frame, having its extending end provided with screwthreads10. This screw-threadedend of the operating-rod 8 extends through thethreaded socket 11, which is countersunk in the outer face of the frameand is adapted to receive the exteriorly-screw-threaded shaft 12 and theadjusting or operating nut 14, that is mounted upon the threaded end 10of the operating-rod. The threads 10 of the operating-rod and theinterior threads of the adjusting or operating nut are of right-handconstruction, while the threads of the socket 11 and the shaft 12 are ofleft-hand construction, or vice versa, so that when the adjusting-nut isloosened or tightened (according to the cut of the threads) theoperating-rod will be moved outwardly or forced inwardly, and theclamping-bar consequently engages with the sides of the sash ordisengages therefrom. For instance, We will presume that the threads ofthe shaft 12 and socket are of lefthand construction. Consequently thenut 14 is turned to the right, and the righthand threads on theoperating-rod will cause this rod to be brought outwardly. Upon turningthe nut 14 in the opposite direction the operating-rod 8 will be forcedinwardly, and the end 7 of the bar 6 will be removed from engagementwith the sash-rail, and the outer face of this end will be forced intoengagement with the walls of the groove in the frame or into engagementwith the weather-strip of the frame, permitting the sash to be readilyremoved, if desired. I

It will be noted that various changes may be made in the details ofconstruction without departing from the general spirit of my invention.

Having thus fully described my invention,

what'I claim as new, and desire to secure by Letters Patent, is-

1. In a window lock, or holder, the combination with the frame, of anoperating-rod arranged thereon and extending outwardly through the framewith its extending end threaded, a clamping-bar pivotally secured to theinner face of the frame with one end of said rod pivotally connectedthereto, and

an adjusting-nut mounted on the other end frame and through which saidoperating-rod extends, and a clamping-nut mounted on the rod andengaging said threaded socket, substantially as described.

3. A window lock and holder consisting of a clamping-bar which ispivotally secured to the inner face of the frame and is provided withangular-ends, an operating-rod pivotally connected to said clamping-barand extending through the Window-frame, and means engaging said rod foractuating the clampingbar to engage the angular ends of the latter withthe sash, substantially as described.

In testimony whereof I afiix my signature in the presence of twowitnesses.

LORENZO H. SPARKS.

Witnesses:

JOHN NOLAND, A. M. WILSON.

